Vibration

Using the Tri-axial Groundborne Vibration Meter VM-56, vibrations caused by blasting and other mining operations can be measured.

The VM-56 Tri-axial Groundborne Vibration Meter VM-56 can be used to carry out measurements of vibration from tunnels in accordance the standards, guidelines and regulations applied in many countries. The VM-56 measures the parameters necessary for assessment of human response to vibration and it is well-suited to measuring the type of vibration which may give rise to groundborne noise (especially from underground tunnels).

The VM-56 Tri-axial Groundborne Vibration Meter VM-56 can be used to carry out measurements of vibration from railways in accordance the standards, guidelines and regulations applied in many countries. The VM-56 measures the parameters necessary for assessment of human response to vibration and it is well-suited to measuring the type of vibration which may give rise to groundborne noise (especially from underground railways).

Measurement of environmental vibrations such as from building sites, industrial plants, traffic etc. are performed with a vibration level meter. (according to the Japan Measurement Act JIS C 1510: 1995)

This measurement system complies with the requirements of JIS B 7761-1,2, a standard for measuring and evaluating exposure to hand-arm vibrations caused by hand-held tools. The system allows simultaneous measurement for both hands.

This measurement system allows measurement and evaluation of vibrations occurring in crew and passenger accommodation sections of ships, to evaluate suitability and comfort according to ISO 6954 and JIS F 0907.

This measurement system allows measurement and evaluation of exposure to whole-body vibrations occurring in transportation vehicles, as specified in the ISO 2631 series and JIS B 7760 series standards.

This measurement system allows measurement and evaluation of exposure to hand-arm vibrations due to the use of hand-held tools, according to the ISO 5349-1,2 and JIS B 7761-1,2 standards.

After a balance adjustment, the vibration displacement is measured and taken as the residual unbalance.

Using an accelerometer and single-channel FFT analyzer, the attenuation waveform of the vibration after excitation is measured and the one-degree-of-freedom damping ratio is determined from the result.